The Marijuana Regulatory Agency (MRA) announced Thursday a recall on contaminated pre-rolls from retail outlets at Bay City, Hazel Park, Detroit, Traverse City, Ann Arbor, Lansing, River Rouge, Ferndale, Quincy, Lowell, Negaunee and Lapeer. According to the Michigan Department of Licensing and Regulatory Affairs (LARA), the investigation was initiated on July 31. Consumers who have any of the contaminated pre-rolls in their possession should return them to the retailer where they were purchased for proper disposal. Consumers who have experienced symptoms after using these products should report their symptoms and product use to their physician. Consumers are also asked to report any adverse product reactions to the MRA via email at MRA-Enforcement@michigan.gov or call 517-284-8599.